What is Keyfactory?
Key factories are used to convert keys (opaque cryptographic keys of type Key ) into key specifications (transparent representations of the underlying key material), and vice versa. Key factories are bi-directional.
What is X509EncodedKeySpec in Java?
Description. X509EncodedKeySpec​(byte[] encodedKey) Creates a new X509EncodedKeySpec with the given encoded key. X509EncodedKeySpec​(byte[] encodedKey, String algorithm) Creates a new X509EncodedKeySpec with the given encoded key.
What is Secretkeyfactory in Java?
This class represents a factory for secret keys. Key factories are used to convert keys (opaque cryptographic keys of type Key ) into key specifications (transparent representations of the underlying key material), and vice versa. Secret key factories operate only on secret (symmetric) keys.
What is pbeWithMD5AndDES?
The pbeWithMD5AndDES-CBC (password based MD5 with DES-CBC) key-encryption algorithm is used to encrypt a given message (octet string) with the DES algorithm in CBC mode using a secret key which is derived from a password with the MD5 message-digest algorithm. The output of the algorithm also is an octet-string.
What is Rfc2898DeriveBytes?
Rfc2898DeriveBytes takes a password, a salt, and an iteration count, and then generates keys through calls to the GetBytes method. RFC 2898 includes methods for creating a key and initialization vector (IV) from a password and salt.
What does PBKDF2 mean?
PBKDF2, defined in RFC 2898, is a specific Key Derivation Function (KDF). A KDF is simply any mechanism for taking a password (something a user remembers or stores in a password manager) and turning it into a symmetric key suitable for cryptographic operations (i.e., AES).
Is PBEWithMD5AndTripleDES secure?
PBEWithMD5AndTripleDES. Overall, this option is probably more-or-less secure. It uses the triple DES algorithm, which gives up to 112-bit security. However, this is a very slow algorithm for that level of security and the key is generated using the MD5 hash algorithm, now considered insecure1.
What is PBE with MD5?
PBE with MD5 and DES is a cryptographic method using the Message Digest 5 (MD5) and Data Encryption Standard (DES) algorithms. MD5 is the message digest algorithm developed by Ronald Rivest in 1991. MD5 takes messages of any length and generates a 128 bit message digest.
What is HMACSHA256?
HMACSHA256 is a type of keyed hash algorithm that is constructed from the SHA-256 hash function and used as a Hash-based Message Authentication Code (HMAC).
What is PasswordDeriveBytes?
PasswordDeriveBytes(Byte[], Byte[], String, Int32, CspParameters) Initializes a new instance of the PasswordDeriveBytes class specifying the password, key salt, hash name, iterations, and cryptographic service provider (CSP) to use to derive the key.